On 3/16/2015 3:04 PM, Ville Syrjälä wrote:
On Mon, Mar 16, 2015 at 02:43:19PM +0530, Jindal, Sonika wrote:
On 3/12/2015 8:40 PM, ville.syrjala@xxxxxxxxxxxxxxx wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
The source rates don't change, so we can just point the caller at the
const arrays.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d638f5e..537f1d0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1157,22 +1157,18 @@ intel_read_sink_rates(struct intel_dp *intel_dp, int *sink_rates)
}
static int
-intel_read_source_rates(struct intel_dp *intel_dp, int *source_rates)
+intel_dp_source_rates(struct intel_dp *intel_dp, const int **source_rates)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
- int i;
- int max_default_rate;
- if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) {
- for (i = 0; i < ARRAY_SIZE(gen9_rates); ++i)
- source_rates[i] = gen9_rates[i];
- } else {
- /* Index of the max_link_bw supported + 1 */
- max_default_rate = (intel_dp_max_link_bw(intel_dp) >> 3) + 1;
- for (i = 0; i < max_default_rate; ++i)
- source_rates[i] = default_rates[i];
+ if (INTEL_INFO(dev)->gen >= 9) {
+ *source_rates = gen9_rates;
+ return ARRAY_SIZE(gen9_rates);
}
- return i;
+
+ *source_rates = default_rates;
+
+ return (intel_dp_max_link_bw(intel_dp) >> 3) + 1;
Now when intel_dp_max_link_bw doesn't do much, can this be simply
ARRAY_SIZE(default_rates)? and we can get away with this function.
If you'll look at patch 6 you'll see me moving the source limitations
from intel_dp_max_link_bw() to intel_dp_source_rates().
Yes, thats why I think we can remove the intel_dp_max_link_bw function
altogether.
}
static void
@@ -1269,12 +1265,12 @@ intel_dp_compute_config(struct intel_encoder *encoder,
int link_avail, link_clock;
int sink_rates[8];
int supported_rates[8] = {0};
- int source_rates[8];
+ const int *source_rates;
int source_len, sink_len, supported_len;
sink_len = intel_read_sink_rates(intel_dp, sink_rates);
- source_len = intel_read_source_rates(intel_dp, source_rates);
+ source_len = intel_dp_source_rates(intel_dp, &source_rates);
supported_len = intel_supported_rates(source_rates, source_len,
sink_rates, sink_len, supported_rates);
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